Icon for a portion of a display screen



FIG. 1 is a front view of an icon for a portion of a display screenshowing my new design; and,

FIG. 2 is a front view of an icon for a portion of a display screenshowing an alternative embodiment of my new design.

The broken line showing of the portion of a display screen is forillustrative purposes only and forms no part of the claimed design.

The ornamental design for an icon for a portion of a display screen, asshown and described.